可持续性不是一种趋势,而是我们共同的责任。
快乐的情感是来源于与不好的事的对比,而快乐本身并没有任何意义。
"Happiness is not something ready made. It comes from your own actions."
Cognitive processes are rule-governed transformations of symbolic structures.
We must balance economic growth with environmental stewardship.